More than six months after the Chicago City Council legalized cooking onboard food trucks, the city issued its first license to Dan Salls, owner of The Salsa Truck, on Jan. 30. Salls, a former financial adviser who quit his job to go into the salsa business, said he will likely serve his first hot meal at the 600 W. Chicago Ave. food-truck stand Tuesday, Feb. 5. He has publicly invited Mayor Rahm Emanuel to be his first customer.